maven

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>storm-kafka-mysql</groupId>
    <artifactId>storm-kafka-mysql</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>
    <name>storm-kafka-mysql</name>
    <description />
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>
    <dependencies>
        <dependency>
            <groupId>javax</groupId>
            <artifactId>javaee-api</artifactId>
            <version>8.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.glassfish.web</groupId>
            <artifactId>javax.servlet.jsp.jstl</artifactId>
            <version>1.2.2</version>
        </dependency>

        <dependency>
            <groupId>org.apache.storm</groupId>
            <artifactId>storm-core</artifactId>
            <version>0.9.5</version>
            <!--<scope>provided</scope>-->
        </dependency>

        <dependency>
            <groupId>org.apache.storm</groupId>
            <artifactId>storm-kafka</artifactId>
            <version>0.9.5</version>
            <!--<scope>provided</scope>-->
        </dependency>

        <dependency>
            <groupId>org.apache.kafka</groupId>
            <artifactId>kafka_2.11</artifactId>
            <version>0.8.2.0</version>
            <exclusions>
                <exclusion>
                    <groupId>org.apache.zookeeper</groupId>
                    <artifactId>zookeeper</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>log4j</groupId>
                    <artifactId>log4j</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.31</version>
        </dependency>

    </dependencies>
    <build>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.3.2</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
            <!--<plugin>-->
                <!--<artifactId>maven-war-plugin</artifactId>-->
                <!--<version>2.2</version>-->
                <!--<configuration>-->
                    <!--<version>3.1</version>-->
                    <!--<failOnMissingWebXml>false</failOnMissingWebXml>-->
                <!--</configuration>-->
            <!--</plugin>-->
        </plugins>
    </build>
</project>

MyKafkaTopology

package com.neusoft;

import java.util.Arrays;

import storm.kafka.BrokerHosts;
import storm.kafka.KafkaSpout;
import storm.kafka.SpoutConfig;
import storm.kafka.StringScheme;
import storm.kafka.ZkHosts;
import backtype.storm.Config;
import backtype.storm.LocalCluster;
import backtype.storm.StormSubmitter;
import backtype.storm.generated.AlreadyAliveException;
import backtype.storm.generated.InvalidTopologyException;
import backtype.storm.spout.SchemeAsMultiScheme;
import backtype.storm.topology.TopologyBuilder;
public class MyKafkaTopology {

     public static void main(String[] args) throws AlreadyAliveException, InvalidTopologyException, InterruptedException {
          String zks = "hadoop01:2181,hadoop02:2181,hadoop03:2181";
          String topic = "orderMq";
         // String zkRoot = "/opt/modules/app/zookeeper/zkdata"; // default zookeeper root configuration for storm
          String id = "wordtest";

          BrokerHosts brokerHosts = new ZkHosts(zks);
          SpoutConfig spoutConf = new SpoutConfig(brokerHosts, topic, "", id);
          spoutConf.scheme = new SchemeAsMultiScheme(new StringScheme());
          spoutConf.forceFromStart = false;
          spoutConf.zkServers = Arrays.asList(new String[] {"hadoop01", "hadoop02", "hadoop03"});
          spoutConf.zkPort = 2181;

          TopologyBuilder builder = new TopologyBuilder();
          builder.setSpout("kafka-reader", new KafkaSpout(spoutConf), 2); // Kafka我们创建了一个2分区的Topic，这里并行度设置为2
          builder.setBolt("print-bolt", new PrintBolt(), 2).shuffleGrouping("kafka-reader");

          Config conf = new Config();
          String name = MyKafkaTopology.class.getSimpleName();
          if (args != null && args.length > 0) {
               // Nimbus host name passed from command line
               conf.put(Config.NIMBUS_HOST, args[0]);
               conf.setNumWorkers(3);
               StormSubmitter.submitTopologyWithProgressBar(name, conf, builder.createTopology());
          } 
          else {
               conf.setMaxTaskParallelism(3);
               LocalCluster cluster = new LocalCluster();
               cluster.submitTopology(name, conf, builder.createTopology());
//               Thread.sleep(60000);
//               cluster.killTopology(name);
//               cluster.shutdown();

//               StormSubmitter.submitTopology(name, conf, builder.createTopology());
          }
     }
}

bolt

package com.neusoft;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import backtype.storm.topology.BasicOutputCollector;
import backtype.storm.topology.OutputFieldsDeclarer;
import backtype.storm.topology.base.BaseBasicBolt;

import backtype.storm.tuple.Tuple;

public class PrintBolt extends BaseBasicBolt {

    public static final Log log = LogFactory.getLog(PrintBolt.class);

    public static final long serialVersionUID = 1L;

    @Override
    public void execute(Tuple input, BasicOutputCollector collector) {
        //获取上一个组件所声明的Field

        String print = input.getString(0);
        log.info("message： " + print);
        System.out.println("message is : " + print);

        //进行传递给下一个bolt
        //collector.emit(new Values(print));

    }

    @Override
    public void declareOutputFields(OutputFieldsDeclarer declarer) {
        //declarer.declare(new Fields("write"));
    }

}